/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:17:59,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:17:59,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:17:59,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:17:59,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:17:59,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:17:59,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:17:59,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:17:59,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:17:59,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:17:59,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:17:59,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:17:59,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:17:59,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:17:59,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:17:59,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:17:59,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:17:59,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:17:59,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:17:59,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:17:59,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:17:59,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:17:59,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:17:59,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:17:59,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:17:59,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:17:59,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:17:59,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:17:59,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:17:59,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:17:59,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:17:59,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:17:59,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:17:59,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:17:59,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:17:59,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:17:59,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:17:59,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:17:59,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:17:59,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:17:59,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:17:59,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:17:59,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:17:59,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:17:59,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:17:59,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:17:59,497 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:17:59,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:17:59,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:17:59,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:17:59,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:17:59,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:17:59,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:17:59,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:17:59,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:17:59,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:17:59,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:17:59,501 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:17:59,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:17:59,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:17:59,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:17:59,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:17:59,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:17:59,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:17:59,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:17:59,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:17:59,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:17:59,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:17:59,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:17:59,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:17:59,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:17:59,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:17:59,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:17:59,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:17:59,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:17:59,816 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:17:59,816 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:17:59,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:17:59,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7aeaa43/dc0df4dfa85a4bdb85eb9e9664b1dd83/FLAGbf2f1df1b [2020-10-12 19:18:00,512 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:18:00,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:18:00,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7aeaa43/dc0df4dfa85a4bdb85eb9e9664b1dd83/FLAGbf2f1df1b [2020-10-12 19:18:00,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c7aeaa43/dc0df4dfa85a4bdb85eb9e9664b1dd83 [2020-10-12 19:18:00,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:18:00,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:18:00,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:00,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:18:00,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:18:00,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:00" (1/1) ... [2020-10-12 19:18:00,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:00, skipping insertion in model container [2020-10-12 19:18:00,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:18:00" (1/1) ... [2020-10-12 19:18:00,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:18:00,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:18:01,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:01,636 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:18:02,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:18:02,087 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:18:02,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02 WrapperNode [2020-10-12 19:18:02,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:18:02,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:18:02,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:18:02,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:18:02,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... [2020-10-12 19:18:02,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:18:02,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:18:02,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:18:02,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:18:02,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:18:02,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:18:02,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:18:02,340 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:18:02,340 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:18:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:18:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:18:02,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:18:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:18:02,341 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:18:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:18:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:18:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:18:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:18:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:18:02,342 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:18:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:18:02,343 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:18:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:18:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:18:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:18:02,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:18:02,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:18:04,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:18:04,201 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:18:04,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:04 BoogieIcfgContainer [2020-10-12 19:18:04,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:18:04,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:18:04,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:18:04,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:18:04,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:18:00" (1/3) ... [2020-10-12 19:18:04,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1683e3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:04, skipping insertion in model container [2020-10-12 19:18:04,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:18:02" (2/3) ... [2020-10-12 19:18:04,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1683e3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:18:04, skipping insertion in model container [2020-10-12 19:18:04,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:18:04" (3/3) ... [2020-10-12 19:18:04,220 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:18:04,233 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:18:04,247 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:18:04,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:18:04,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:18:04,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:18:04,338 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:18:04,339 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:18:04,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:18:04,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:18:04,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:18:04,340 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:18:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states. [2020-10-12 19:18:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 19:18:04,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:04,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:04,434 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash -310737882, now seen corresponding path program 1 times [2020-10-12 19:18:04,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:04,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851389358] [2020-10-12 19:18:04,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:09,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:10,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:10,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 19:18:10,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:18:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:18:10,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:10,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-12 19:18:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:18:11,285 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:18:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:11,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:11,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:11,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 19:18:11,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:11,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:11,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851389358] [2020-10-12 19:18:11,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:11,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:11,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372658734] [2020-10-12 19:18:11,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:11,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:11,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:11,670 INFO L87 Difference]: Start difference. First operand 597 states. Second operand 5 states. [2020-10-12 19:18:17,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:17,576 INFO L93 Difference]: Finished difference Result 1712 states and 3047 transitions. [2020-10-12 19:18:17,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:18:17,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 242 [2020-10-12 19:18:17,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:17,604 INFO L225 Difference]: With dead ends: 1712 [2020-10-12 19:18:17,605 INFO L226 Difference]: Without dead ends: 1140 [2020-10-12 19:18:17,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:17,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-10-12 19:18:17,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1138. [2020-10-12 19:18:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-10-12 19:18:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1766 transitions. [2020-10-12 19:18:17,737 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1766 transitions. Word has length 242 [2020-10-12 19:18:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:17,738 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1766 transitions. [2020-10-12 19:18:17,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1766 transitions. [2020-10-12 19:18:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-12 19:18:17,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:17,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:17,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:18:17,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:17,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:17,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1925016862, now seen corresponding path program 1 times [2020-10-12 19:18:17,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:17,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321876469] [2020-10-12 19:18:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:20,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:21,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-12 19:18:22,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:18:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:18:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:18:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:23,473 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:18:23,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:23,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:23,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:23,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:23,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:18:23,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:23,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321876469] [2020-10-12 19:18:23,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:23,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:23,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721748406] [2020-10-12 19:18:23,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:23,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:23,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:23,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:23,720 INFO L87 Difference]: Start difference. First operand 1138 states and 1766 transitions. Second operand 5 states. [2020-10-12 19:18:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:29,061 INFO L93 Difference]: Finished difference Result 3349 states and 5193 transitions. [2020-10-12 19:18:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:29,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-12 19:18:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:29,075 INFO L225 Difference]: With dead ends: 3349 [2020-10-12 19:18:29,076 INFO L226 Difference]: Without dead ends: 2228 [2020-10-12 19:18:29,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2020-10-12 19:18:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2226. [2020-10-12 19:18:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2226 states. [2020-10-12 19:18:29,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3432 transitions. [2020-10-12 19:18:29,196 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3432 transitions. Word has length 244 [2020-10-12 19:18:29,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:29,197 INFO L479 AbstractCegarLoop]: Abstraction has 2226 states and 3432 transitions. [2020-10-12 19:18:29,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3432 transitions. [2020-10-12 19:18:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-12 19:18:29,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:29,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:29,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:18:29,208 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:29,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:29,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1703232999, now seen corresponding path program 1 times [2020-10-12 19:18:29,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:29,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561142957] [2020-10-12 19:18:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:29,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:30,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:32,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:32,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:34,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-12 19:18:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:18:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 19:18:34,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 19:18:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:34,928 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:18:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:34,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:34,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:34,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:34,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 19:18:34,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:34,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:34,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:34,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:35,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561142957] [2020-10-12 19:18:35,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:35,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:35,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503312160] [2020-10-12 19:18:35,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:35,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:35,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:35,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:35,088 INFO L87 Difference]: Start difference. First operand 2226 states and 3432 transitions. Second operand 5 states. [2020-10-12 19:18:40,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:40,570 INFO L93 Difference]: Finished difference Result 6363 states and 9756 transitions. [2020-10-12 19:18:40,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:40,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-12 19:18:40,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:40,597 INFO L225 Difference]: With dead ends: 6363 [2020-10-12 19:18:40,598 INFO L226 Difference]: Without dead ends: 4365 [2020-10-12 19:18:40,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2020-10-12 19:18:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 4363. [2020-10-12 19:18:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4363 states. [2020-10-12 19:18:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 6686 transitions. [2020-10-12 19:18:40,843 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 6686 transitions. Word has length 246 [2020-10-12 19:18:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:40,845 INFO L479 AbstractCegarLoop]: Abstraction has 4363 states and 6686 transitions. [2020-10-12 19:18:40,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 6686 transitions. [2020-10-12 19:18:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-12 19:18:40,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:40,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:40,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:18:40,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:40,861 INFO L82 PathProgramCache]: Analyzing trace with hash 396746520, now seen corresponding path program 1 times [2020-10-12 19:18:40,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:40,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760294973] [2020-10-12 19:18:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:40,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:45,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:45,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 19:18:45,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:18:45,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:18:45,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:45,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:45,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 19:18:45,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:46,569 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:18:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:46,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:46,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:46,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:18:46,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:18:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:46,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760294973] [2020-10-12 19:18:46,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:46,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:46,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182072661] [2020-10-12 19:18:46,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:46,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:46,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:46,840 INFO L87 Difference]: Start difference. First operand 4363 states and 6686 transitions. Second operand 5 states. [2020-10-12 19:18:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:52,893 INFO L93 Difference]: Finished difference Result 12700 states and 19395 transitions. [2020-10-12 19:18:52,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:52,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-12 19:18:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:52,931 INFO L225 Difference]: With dead ends: 12700 [2020-10-12 19:18:52,931 INFO L226 Difference]: Without dead ends: 8587 [2020-10-12 19:18:52,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:52,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8587 states. [2020-10-12 19:18:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8587 to 8585. [2020-10-12 19:18:53,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8585 states. [2020-10-12 19:18:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8585 states to 8585 states and 13071 transitions. [2020-10-12 19:18:53,452 INFO L78 Accepts]: Start accepts. Automaton has 8585 states and 13071 transitions. Word has length 248 [2020-10-12 19:18:53,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:53,453 INFO L479 AbstractCegarLoop]: Abstraction has 8585 states and 13071 transitions. [2020-10-12 19:18:53,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 8585 states and 13071 transitions. [2020-10-12 19:18:53,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-12 19:18:53,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:53,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:53,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:18:53,470 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash -818651685, now seen corresponding path program 1 times [2020-10-12 19:18:53,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:53,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529523255] [2020-10-12 19:18:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:53,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:56,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:56,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:58,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:58,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-12 19:18:58,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:18:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:18:58,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:58,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 19:18:58,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:59,010 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:18:59,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:59,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:59,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:59,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:59,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:18:59,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:59,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:59,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:18:59,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529523255] [2020-10-12 19:18:59,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:59,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:59,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674121517] [2020-10-12 19:18:59,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:59,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:59,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:59,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:59,123 INFO L87 Difference]: Start difference. First operand 8585 states and 13071 transitions. Second operand 5 states. [2020-10-12 19:19:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:05,362 INFO L93 Difference]: Finished difference Result 24292 states and 36699 transitions. [2020-10-12 19:19:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:05,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-12 19:19:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:05,412 INFO L225 Difference]: With dead ends: 24292 [2020-10-12 19:19:05,413 INFO L226 Difference]: Without dead ends: 16654 [2020-10-12 19:19:05,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16654 states. [2020-10-12 19:19:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16654 to 16652. [2020-10-12 19:19:06,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16652 states. [2020-10-12 19:19:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16652 states to 16652 states and 25156 transitions. [2020-10-12 19:19:06,329 INFO L78 Accepts]: Start accepts. Automaton has 16652 states and 25156 transitions. Word has length 250 [2020-10-12 19:19:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:06,329 INFO L479 AbstractCegarLoop]: Abstraction has 16652 states and 25156 transitions. [2020-10-12 19:19:06,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 16652 states and 25156 transitions. [2020-10-12 19:19:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-12 19:19:06,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:06,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:06,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:19:06,368 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash -2041144823, now seen corresponding path program 1 times [2020-10-12 19:19:06,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:06,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787174935] [2020-10-12 19:19:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:10,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-12 19:19:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:19:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 19:19:11,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:19:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:19:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:11,870 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:19:11,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:11,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:11,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:11,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:11,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:19:11,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:11,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:11,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:11,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:11,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787174935] [2020-10-12 19:19:11,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:11,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:11,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275584426] [2020-10-12 19:19:11,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:11,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:11,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:11,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:11,978 INFO L87 Difference]: Start difference. First operand 16652 states and 25156 transitions. Second operand 5 states. [2020-10-12 19:19:18,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:18,427 INFO L93 Difference]: Finished difference Result 46338 states and 69603 transitions. [2020-10-12 19:19:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:18,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-12 19:19:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:18,491 INFO L225 Difference]: With dead ends: 46338 [2020-10-12 19:19:18,492 INFO L226 Difference]: Without dead ends: 31184 [2020-10-12 19:19:18,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:18,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31184 states. [2020-10-12 19:19:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31184 to 18254. [2020-10-12 19:19:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18254 states. [2020-10-12 19:19:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18254 states to 18254 states and 27863 transitions. [2020-10-12 19:19:20,542 INFO L78 Accepts]: Start accepts. Automaton has 18254 states and 27863 transitions. Word has length 252 [2020-10-12 19:19:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:20,542 INFO L479 AbstractCegarLoop]: Abstraction has 18254 states and 27863 transitions. [2020-10-12 19:19:20,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:20,542 INFO L276 IsEmpty]: Start isEmpty. Operand 18254 states and 27863 transitions. [2020-10-12 19:19:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-12 19:19:20,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:20,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:20,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:19:20,572 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:20,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:20,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1658849496, now seen corresponding path program 1 times [2020-10-12 19:19:20,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:20,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489168999] [2020-10-12 19:19:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:20,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:21,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:21,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:21,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:24,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:25,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-12 19:19:25,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:19:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:19:25,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:25,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 19:19:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:26,034 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:19:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:26,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:19:26,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:26,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489168999] [2020-10-12 19:19:26,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:26,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:26,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481070423] [2020-10-12 19:19:26,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:26,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:26,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:26,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:26,109 INFO L87 Difference]: Start difference. First operand 18254 states and 27863 transitions. Second operand 5 states. [2020-10-12 19:19:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:33,294 INFO L93 Difference]: Finished difference Result 53624 states and 81709 transitions. [2020-10-12 19:19:33,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:33,295 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 254 [2020-10-12 19:19:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:33,359 INFO L225 Difference]: With dead ends: 53624 [2020-10-12 19:19:33,359 INFO L226 Difference]: Without dead ends: 35673 [2020-10-12 19:19:33,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35673 states. [2020-10-12 19:19:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35673 to 35643. [2020-10-12 19:19:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35643 states. [2020-10-12 19:19:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35643 states to 35643 states and 53909 transitions. [2020-10-12 19:19:35,608 INFO L78 Accepts]: Start accepts. Automaton has 35643 states and 53909 transitions. Word has length 254 [2020-10-12 19:19:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:35,608 INFO L479 AbstractCegarLoop]: Abstraction has 35643 states and 53909 transitions. [2020-10-12 19:19:35,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:35,608 INFO L276 IsEmpty]: Start isEmpty. Operand 35643 states and 53909 transitions. [2020-10-12 19:19:35,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-12 19:19:35,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:35,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:35,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:19:35,646 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:35,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash -2070388380, now seen corresponding path program 1 times [2020-10-12 19:19:35,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:35,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262495444] [2020-10-12 19:19:35,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:35,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:40,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 19:19:40,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:19:40,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:41,131 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:19:41,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:41,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:41,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:41,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:41,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:19:41,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:41,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:41,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:41,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262495444] [2020-10-12 19:19:41,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:41,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:41,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681668750] [2020-10-12 19:19:41,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:41,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:41,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:41,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:41,254 INFO L87 Difference]: Start difference. First operand 35643 states and 53909 transitions. Second operand 5 states. [2020-10-12 19:19:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:49,790 INFO L93 Difference]: Finished difference Result 88492 states and 132045 transitions. [2020-10-12 19:19:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:49,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 256 [2020-10-12 19:19:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:49,862 INFO L225 Difference]: With dead ends: 88492 [2020-10-12 19:19:49,863 INFO L226 Difference]: Without dead ends: 59946 [2020-10-12 19:19:49,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59946 states. [2020-10-12 19:19:52,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59946 to 39527. [2020-10-12 19:19:52,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39527 states. [2020-10-12 19:19:52,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39527 states to 39527 states and 60328 transitions. [2020-10-12 19:19:52,666 INFO L78 Accepts]: Start accepts. Automaton has 39527 states and 60328 transitions. Word has length 256 [2020-10-12 19:19:52,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:52,667 INFO L479 AbstractCegarLoop]: Abstraction has 39527 states and 60328 transitions. [2020-10-12 19:19:52,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 39527 states and 60328 transitions. [2020-10-12 19:19:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 19:19:52,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:52,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:19:52,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:19:52,698 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:52,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1846123849, now seen corresponding path program 1 times [2020-10-12 19:19:52,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:52,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320718109] [2020-10-12 19:19:52,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:52,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:57,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:57,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:57,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:57,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-12 19:19:57,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:19:57,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:19:57,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:19:57,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-12 19:19:57,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:58,216 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:19:58,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:58,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:58,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:58,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:19:58,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:58,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:58,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:58,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:58,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320718109] [2020-10-12 19:19:58,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:58,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:58,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100871929] [2020-10-12 19:19:58,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:58,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:58,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:58,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:58,330 INFO L87 Difference]: Start difference. First operand 39527 states and 60328 transitions. Second operand 5 states. [2020-10-12 19:20:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:09,179 INFO L93 Difference]: Finished difference Result 105549 states and 159025 transitions. [2020-10-12 19:20:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:09,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 258 [2020-10-12 19:20:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:09,270 INFO L225 Difference]: With dead ends: 105549 [2020-10-12 19:20:09,271 INFO L226 Difference]: Without dead ends: 75901 [2020-10-12 19:20:09,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75901 states. [2020-10-12 19:20:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75901 to 75899. [2020-10-12 19:20:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75899 states. [2020-10-12 19:20:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75899 states to 75899 states and 114833 transitions. [2020-10-12 19:20:15,894 INFO L78 Accepts]: Start accepts. Automaton has 75899 states and 114833 transitions. Word has length 258 [2020-10-12 19:20:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:15,894 INFO L479 AbstractCegarLoop]: Abstraction has 75899 states and 114833 transitions. [2020-10-12 19:20:15,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 75899 states and 114833 transitions. [2020-10-12 19:20:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-12 19:20:15,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:15,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:15,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:20:15,966 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:15,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2000727138, now seen corresponding path program 1 times [2020-10-12 19:20:15,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:15,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687367144] [2020-10-12 19:20:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:21,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-12 19:20:21,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:20:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 19:20:21,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 19:20:21,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:20:21,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:21,479 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:20:21,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:21,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:21,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:21,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:21,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:21,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:20:21,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:21,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:21,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687367144] [2020-10-12 19:20:21,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:21,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:21,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139953714] [2020-10-12 19:20:21,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:21,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:21,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:21,557 INFO L87 Difference]: Start difference. First operand 75899 states and 114833 transitions. Second operand 5 states. [2020-10-12 19:20:30,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:30,768 INFO L93 Difference]: Finished difference Result 135865 states and 202422 transitions. [2020-10-12 19:20:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:30,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-10-12 19:20:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:30,859 INFO L225 Difference]: With dead ends: 135865 [2020-10-12 19:20:30,859 INFO L226 Difference]: Without dead ends: 75899 [2020-10-12 19:20:30,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75899 states. [2020-10-12 19:20:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75899 to 75899. [2020-10-12 19:20:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75899 states. [2020-10-12 19:20:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75899 states to 75899 states and 114001 transitions. [2020-10-12 19:20:37,852 INFO L78 Accepts]: Start accepts. Automaton has 75899 states and 114001 transitions. Word has length 260 [2020-10-12 19:20:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:37,853 INFO L479 AbstractCegarLoop]: Abstraction has 75899 states and 114001 transitions. [2020-10-12 19:20:37,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand 75899 states and 114001 transitions. [2020-10-12 19:20:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-12 19:20:37,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:37,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:37,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:20:37,904 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:37,904 INFO L82 PathProgramCache]: Analyzing trace with hash 779693066, now seen corresponding path program 1 times [2020-10-12 19:20:37,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:37,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901600411] [2020-10-12 19:20:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:38,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:41,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:42,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:42,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-12 19:20:42,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:20:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 19:20:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:20:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 19:20:42,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 19:20:42,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:43,409 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:20:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:20:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:43,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:20:43,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:20:43,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:20:43,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:20:43,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:20:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:20:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:20:43,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:20:43,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:20:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:20:43,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901600411] [2020-10-12 19:20:43,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:20:43,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:20:43,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187808651] [2020-10-12 19:20:43,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:20:43,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:20:43,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:20:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:20:43,494 INFO L87 Difference]: Start difference. First operand 75899 states and 114001 transitions. Second operand 5 states. [2020-10-12 19:20:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:20:53,000 INFO L93 Difference]: Finished difference Result 123917 states and 183354 transitions. [2020-10-12 19:20:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:20:53,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2020-10-12 19:20:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:20:53,069 INFO L225 Difference]: With dead ends: 123917 [2020-10-12 19:20:53,069 INFO L226 Difference]: Without dead ends: 69451 [2020-10-12 19:20:53,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:20:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69451 states. [2020-10-12 19:20:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69451 to 69323. [2020-10-12 19:20:57,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69323 states. [2020-10-12 19:20:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69323 states to 69323 states and 104249 transitions. [2020-10-12 19:20:57,994 INFO L78 Accepts]: Start accepts. Automaton has 69323 states and 104249 transitions. Word has length 261 [2020-10-12 19:20:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:20:57,994 INFO L479 AbstractCegarLoop]: Abstraction has 69323 states and 104249 transitions. [2020-10-12 19:20:57,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:20:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 69323 states and 104249 transitions. [2020-10-12 19:20:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-12 19:20:58,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:20:58,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:20:58,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:20:58,045 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:20:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:20:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1528986350, now seen corresponding path program 1 times [2020-10-12 19:20:58,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:20:58,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033796403] [2020-10-12 19:20:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:20:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:20:58,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:20:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:03,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:03,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-12 19:21:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:21:03,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:21:03,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:03,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 19:21:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 19:21:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:03,553 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:21:03,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:03,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:03,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:21:03,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:03,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033796403] [2020-10-12 19:21:03,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:03,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:03,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263193754] [2020-10-12 19:21:03,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:03,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:03,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:03,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:03,629 INFO L87 Difference]: Start difference. First operand 69323 states and 104249 transitions. Second operand 5 states. [2020-10-12 19:21:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:19,616 INFO L93 Difference]: Finished difference Result 173090 states and 257228 transitions. [2020-10-12 19:21:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:21:19,617 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-12 19:21:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:19,760 INFO L225 Difference]: With dead ends: 173090 [2020-10-12 19:21:19,760 INFO L226 Difference]: Without dead ends: 122460 [2020-10-12 19:21:19,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:21:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122460 states. [2020-10-12 19:21:26,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122460 to 78170. [2020-10-12 19:21:26,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78170 states. [2020-10-12 19:21:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78170 states to 78170 states and 118916 transitions. [2020-10-12 19:21:26,312 INFO L78 Accepts]: Start accepts. Automaton has 78170 states and 118916 transitions. Word has length 265 [2020-10-12 19:21:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:26,312 INFO L479 AbstractCegarLoop]: Abstraction has 78170 states and 118916 transitions. [2020-10-12 19:21:26,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:21:26,312 INFO L276 IsEmpty]: Start isEmpty. Operand 78170 states and 118916 transitions. [2020-10-12 19:21:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-12 19:21:26,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:26,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:21:26,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:21:26,376 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:26,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1082713498, now seen corresponding path program 1 times [2020-10-12 19:21:26,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:26,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060724826] [2020-10-12 19:21:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:26,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:26,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:30,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:31,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-12 19:21:31,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:21:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:21:31,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 19:21:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:31,903 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:21:31,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:31,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:31,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:31,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:21:31,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:31,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:31,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:32,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060724826] [2020-10-12 19:21:32,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:32,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:32,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668392395] [2020-10-12 19:21:32,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:32,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:32,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:32,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:32,028 INFO L87 Difference]: Start difference. First operand 78170 states and 118916 transitions. Second operand 5 states.